請問大家有沒有試過乘飛機時遇上氣流 20分

2007-01-22 8:27 am
我想知道遇上氣流時,客機服務員會怎樣安撫乘客,及會指揮乘客做什麼,和會否聽到雜物摔地 的聲音,還有乘客當時會有什麼舉動.

懇請大家回答,小弟感激不盡.

回答 (8)

2007-01-23 7:54 am
✔ 最佳答案
飛機遇上Turbulence 十分常見。通常Turbulence 分0至6級,遇上0-3級差不多是某些航程的必經之事。而5級以上十分罕有。通常若果遇上5級,乘客會感到好像是坐過山車,又上又落,可能會有人不適嘔吐,或者有人祈禱...

但其實民航機結構十分紮實,飛機進入氣流會上下左右晃動,可能會失去高度,但不足破壞結構。而且民航機的飛行姿態是非常穩定的,很難會因氣流而導致失控。事實上,氣象偵察機經常故意進入颱風內飛行,而一樣無損,可知大部份氣流是不足影響飛機本身的安全。而至今為止,紀錄上未曾有民航機因為遇上氣流(指高空氣流)而失事。最嚴重一次事件都只是導致飛行表現受損。

民航飛機進入氣流中最大問題是對乘客造成危險,如果沒有扣好安全帶,乘客可能撞上天花或艙內其他東西;而若果手提行李Cabinet沒有扣好亦可能掉下行李壓傷乘客。1996年一架AA(UA?)飛機由日本飛美國遇上強烈氣流,一名乘客因撞上物件,頸部受創而死亡。

多數飛機都盡量避免因天氣或地形而造成的氣流...當遇上時,飛機可能會飛高或低一點避開嚴重氣流的地方。若果機師決定Ride-it-out,通常會將飛機交由 Auto-pilot 駕駛,因為AUto-pilot 比人手更能保持飛機穩定。但部分氣流(主要是CAT晴空湍流)不能預見,通常亦是最大影響;往往都是遇見了才知道。

乘客其實只要依指示扣好安全帶便可以了。

我曾經遇上最嚴重的一次氣流,是在兩三秒內感覺像是玩跳樓機,Free-fall了一下。而且是毫無先兆突然而來。旁邊的人正在喝咖啡倒在面上。大家嚇了一下,之後繼續睡覺!
2007-01-22 11:54 pm
1. 氣流, 空氣既流動, 空氣會由邊度流向邊度, 會流幾快, 就要視乎氣壓
空氣會由高氣壓既地方, 流向低氣壓既地方, 氣壓差距愈大, 氣流愈大, 風愈大
另外, 空氣亦會垂直流動, 空氣遇熱expand, 變輕, 向上升
上升氣流為不穩定氣流, 下降氣流為穩定氣流
氣流會受環境影響而改變強弱或者去向
e.g.地勢---空氣流過起伏不定既地形時, 好容易跟隨地形改變去向, 引起湍流(turbulence)
---空氣流過樽頸位置既地形時, 會加速成為強風
---空氣流過海面時, 由於冇阻擋, 空氣可以流得好快, 強度增加
大型/區域氣候系統---影響唔同高度既氣流方向同強度, 容易引起風切變, 例如jet stream, thunderstorm, microburst, typhoon

2.飛機飛行時遇上強烈氣流, 導致失去正常既飛行姿態, 結果就會失去飛行高度
, 即係跌落黎
若果飛機係o係較高既高空巡航的話, 就會有較多既垂直距離, 同埋時間俾機師去嘗試救機, 回復正常既飛行姿態
但若果飛機係o係低空飛行的話, 就會難d去救機, 容易炒機
另外極強烈既氣流亦對機身結構有影響, 可能會破壞飛機既控制面, 飛機失去控制就容易失事

3.失事不離撞落地面或者空中解體, 撞左之所以會著火當然係因為有猛烈既磨擦同撞擊而引起, 飛機載住咁多燃料, 而且機身大部份屬於易燃物, 著火都唔奇, 而且好似會o係好短時間內俾火燒晒成架機
飛機強烈震動,是與氣流有關,與雲沒有直接關係。例如飛機穿越高層的雲如卷雲時,通常不會震動。
不過,閣下所指的「厚雲」,應該是指積雨雲。積雨雲一般伴隨雷電、狂風暴雨等出現,它形成時,雲內部的熱空氣會急速上升,形成一股氣流。飛機穿過積雨雲時,便是這種氣流使飛機震動。
因為逆風 (head wind) 使機翼產生足夠的浮力, 抬起飛機, 令飛機有效利用上升的氣流飛行. 雖然飛行及操控較穩定, 但也較耗油. 當飛機達萬尺高空時, 順風 (tailing wind) 飛行能縮減航程和較省油.

但當起飛和降落時, 飛機就必須逆風而行, 這也是機場跑道經常轉換起降方向的原因 (起和降永遠是同一個方向, 而降落時逆風更為必要). 因為起飛時要靠地面風抬起飛機, 令飛機順利爬升, 從而縮短跑道滑行距離. 降落時抬升力因航速減慢而減少, 此時逆風的作用更為重要. 如降落時遇上風切變, 跑道上突然轉為順風, 飛機會因機下氣流抬升力驟減, 機頂上層順風氣流會把飛機向下壓, 造成急墜,相當危險, 而引擎動力全開也未必百分百能令飛機脫離困境.

如情況相反, 降落時遇著順風, 臨近跑道時遇著逆風, 這情況也不適宜降落. 因為地面氣流抬起飛機, 令下降速率(米/每秒)減慢, 飛機只能在跑道較後的位置降落, 可供剎停飛機的滑行道也大大縮短, 造成危險.

此外, 氣壓, 海洋氣流, 海拔高度, 季侯風, 地形, 以至機身狀態等均是飛行穩定所需考慮的因素.
2007-01-22 9:17 pm
如果不幸遇上氣流
乘客應該secure yourself,盡快返回座位,扣好安全帶
機艙服務員到時係唔會巡視機艙
直到完全離開氣流

真係遇上氣流
chief purser係會做announcement
亦會指示你點做
遇上氣流,係會停派餐或者飲品(尤其熱飲)

如果聽到雜物摔地ge聲音
可以等到"fasten seatbelt" sign熄滅後通知機艙服務員
佢地會處理ga la

乘客亦應該保持冷靜
切勿製造恐慌
參考: working experience
2007-01-22 6:58 pm
When the 氣流 is comming you just need to Fastern the Seat balt and Don't Scary
2007-01-22 9:04 am
梗有啦, 記得同太太去渡蜜月, 第一次坐長途機去美國, 在夜晚經過太平洋萬多呎高空的時候, 飛機突然震動得非常利害, 空姐宣佈遇上氣流, 叫我們安坐椅上扣好安全帶, 我帶着戰戰兢兢的心情照做, 誰不知, 一下閃電過後, 一個離心力使我好像突然升起離開座椅, 再看看顯示屏的飛行高度, 已經在數秒間下降了三千呎, 嚇得我一身冷汗, 正想轉頭安慰我的新婚妻子, 才發覺自己多餘, 因為她仍好夢正酣, 完全不知道剛才我們的驚險遭遇, 真激死!
參考: 親身經歷
2007-01-22 9:03 am
Usually a turbalance, you will see cabin crew going around the cabin quickly to check if everybody have fasten their seatbelt... And in some cases, even the crew will have the return to their seat... So in most case, there is nothing that the crew can do really to calm the passenger down during the process of a turbalance... However, after the event of a turbalance, the crew will come around again to check if everything is alright and also to calm passenger who are really scared...

But in some cases, there could be the possibility of clear air turbalance which means that a turbalance that cannot be detected... In these case, the pilot will only realise that they have went into a turbalance when the aircraft become unstable... In these case, it is where the injury comes from... Unexpected turbalance as all the passengers and crew were unprepared... And in many case, it would cause injury not only to passenger, but also to crew... And the remaining crew will try their best to get injuried crew seated and calm passengers who are shocked... And even to tidy up the cabin in some case... As after a unexpected turbalance, the cabin would be full of mess with stuff fall out of the overhead hold...

And that is the reason why all airlines would advice passenger to have their seatbelt on at all time because of unexpected turbalance and to reduce the chance of injury... And since turbalance is very common, passenger would just need to get back to their seat until the seatbelt sign is off... And in case of an unexpected turbalance happening, it would help for passenger just to be seated and maybe tidy up a little the area around you...

In most case, crew will not be required to calm passenger as announcement would be made by the pilot of the situation as the seatbelt sign is on... And if there is really passenger who was so shocked, usually it would be the inflight manager (most experienced crew) to visit to passenger to try to calm them down... In some case, the crew will try to explain the situation and how a turbalance can happen and that everything is fine...
2007-01-22 8:56 am
遇到氣流時,機長只會亮起安全帶信號燈和透過廣播通知乘客扣緊安全帶,繼續如常飛行。

正常來講應該唔會聽到有野跌落地既聲,除非咁ARM 果時係食緊飛機餐,如果唔係應該唔會點有野跌落地....

相反雷達探測到前方有強烈的風暴,機長會作出適當的迴避,不會硬碰。和你個人可能會上下彈起....
除非飛機失靈,否則是不會緊急降落的。遇上氣流時就更加不會,因為待在高空還好,接近地面反而會有墜機的危險。

PS : 所以其實任知時候都扣上安全帶會比較好D>>
2007-01-22 8:35 am
有氣流時, 乘客及客機服務員都會坐返埋位, 扣好安全帶

雜物摔地是有可能的, 不過不用怕, 遇上氣流是很平常的事


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